Laser welding has entered the field of powder metallurgy material processing with its unique advantages, opening up new prospects for the application of powder metallurgy materials. For example, using the commonly used brazing method in powder metallurgy material connection to weld diamond, due to low bonding strength, wide heat affected zone, and inability to adapt to high temperatures and high strength requirements, the brazing material melts and falls off. Using laser welding can improve welding strength and high-temperature resistance.

Laser welding is the use of high-energy laser pulses to locally heat a material in a small area. The energy radiated by the laser is directed through heat transfer to the internal diffusion of the material, melting the material and forming a specific molten pool. It is a new type of welding method mainly aimed at the welding of thin-walled materials and precision parts, which can achieve spot welding, butt welding, overlap welding, sealing welding, etc. It has a high aspect ratio, small weld width, small heat affected zone, small deformation, fast welding speed, smooth and beautiful weld seam, no need for treatment or simple treatment after welding, high weld quality, no pores, precise control, small focus light point, high positioning accuracy, and easy to achieve automation.